| Best | Binoculars | for | Clarity |
| Best | Binoculars | for | Focus |
| Best | Binoculars | for | Size |
| Best | Binoculars | for | Overall |
| Best | Binoculars | for | Bird Watching |
Binocular Sizes
Binoculars are classed using a number system, eg 7 x 50.
The first number represents the amount of magnification; 7 means the number of times the image will be magnified. A larger
magnification is not always the best, because as magnification increases, brightness decreases. The second number
represents the diameter of the front lens; 50 is
equal to 50 mm. The larger the diameter, the brighter and sharper
the image will be.
The most frequently asked question by prospective binocular buyers is "What size is right for me?" The answer always depends on your intended use. Here's a rough guide:
Hunting: 8 x 40, 8 x 42, 10 x 40
Birding: 8 x 40, 8 x 42, 10 x 40, 10 x 42
Astronomy: 7 x 50, 10 x 5010 x 70, 20 x 80, 25 x 100
Marine: 7 x 50
Sports: 8 x 40, 8 x 42
Hiking: 8 x 25, 10 x 25
Binocular Prisms and Optics
The optical quality of a pair of binoculars is based on the type of prism and optical glass. Prisms
produce an upright, left-to-right image. There are two types of
prisms: porro and roof.
Optical glass is made from either BaK4 - barium crown glass - or BK7 - borosilicate flint glass. The better of the two tends to be the BaK4 glass, which produces sharper, more defined images.
Lens Coatings and Focusing
Chemical coatings protect the lens and brighten the images that binoculars provide. There are three main types of coatings:
Fully coated: single-layer coating for inexpensive binoculars
Multi-coating: maximum light
Fully multi-coated: brightest and sharpest image
Fixed focus: not adjustable
Center-focus: a single center-mounted wheel for versatile adjustment
Interpupillary focus: adjusts width to match distance between eyes
Diopter focus: ability
to adjust individual eyes
Range of Prices
Prices range from less
than $60 to $3500 and sometimes more. Nikon Action VII binoculars are one of the best overall models for most uses and cost about $100, but a specialized pair like the Canon L IS WP Binoculars feature image stabilizing, diopter focus, waterproofing and provide sharp, detailed images of quickly-moving objects, and cost about $1000. Once you have decided on a
budget range, do some research to compare features and get the best price.
Technical Specifications
Depending on what you want your binoculars to do, you may want to consider the following features and technical specs:
Compatibility:
are you using your binoculars with a tripod? Do you already have a tripod that your binoculars need to fit?
Controls: how easy should your binoculars be? Do you want ease and simplicity or maximum control?
Weight: do you use your binoculars for long periods of time or travel with your binoculars? If so, you might want a lighter-weight model
Waterproof: good
for hunting, bird-watching, marine sports, rainy days, outdoor use in general, as well as cleaning
Grip: do they fit your hands? Are they easy and comfortable to hold?
Armored: do you want a rugged pair of binoculars with a rubber coat to prevent nicks and scratches?
Buying Binoculars
Once you have narrowed
your binoculars choice(s), visit a store to try out the binoculars you think you might like. It's always smart to see and feel a product in person before you buy.
When you feel you've made your choice, comparison shopping online will get you the best possible deal.
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